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摘要:本文研究Ti2SnC催化無水乙醇和冰乙酸合成乙酸乙酯的催化活性?？疾齑呋瘎┯昧?、原料配比、反應(yīng)時間等因素對酯化率的影響。經(jīng)實驗得最佳實驗條件：催化劑用量0.2000g，醇酸摩爾比為1：3.6，反應(yīng)30min，可使酯化率達到88.12%。 依次做催化劑回收1次、2次、3次、4次時的酯化率，隨著催化劑重復(fù)使用的次數(shù)增多酯化率依次減小。 通過大量的資料查詢，最后選了乙酸乙酯這個體系來研究，主要是因為此反應(yīng)體系對于其他酯化反應(yīng)體系來說是最簡單的，而且通過實驗研究后酯化率能達到80%以上，所以也達到我們的實驗要求。 在灼燒相同的時間下，催化劑灼燒溫度越高，酯化率越高；在灼燒溫度相同的條件下，催化劑灼燒的時間越長，酯化率越高。 關(guān)鍵詞：鈦錫碳；酯化反應(yīng)；催化劑
ABSTRACT:This Paper studied the synthesis of acetate ester with absolute alcohol and acetic acid as reactant，with titanium sulfate as catalyst. After investigating catalyst amount，reactant ration and reaction time，the betterreaction fact0rs had been found： the acetic acids is 0.2000g，the mole ration of alcohol andacid is1:3.6,the reaetion time is 30 rain，the recovery rate of EtOAc is over88.12%.Compared with 98 H2SO4% ,the result was better when titanium sulfate is used as catalyst． Ordinal test the rate of esterification by catalysts recycling 1 times, 2 times, 3 times, 4 times, we found that as increasing the number of repeated use of catalysts desertification rate in turn decrease. Through a lot of material queried, we finally chose this ethyl acetate system to study, mainly because compared with other esterification reaction system, this reaction system is the most simple and this experiments can achieve the esterification rate more than 80%, and this condition also achieve our experimental requirements. At the same burning time, catalyst burning hotter, esterification rate higher; In calcinations temperature under the same conditions, the more of catalyst burning time , the higher of esterification rate. Keywords: Ti2SnC；esterifieation；catalyst |
